740 KB0 KB201320252019Ogris, NikicaPiškur, BarbaraSmolnikar, Peterstr. 45-54številka:vol. 120ISSN:2335-3112COBISSID_HOST:5574566URN:URN:NBN:SI:doc-LIZHVZSSslBiotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vireBiotehniška fakulteta, Oddelek za lesarstvoGozdarski inštitut Slovenije, založba Silvae SlovenicaActa silvae et lignibolezendamagediseasedrevesnicaharmful organismmlada rastlinanurseryplanting stockpoškodovanostsadikaseedlingsemenkaSloveniaSlovenijaškodljiv organizemyoung plantŠkodljivi organizmi in škodljivi dejavniki na sadikah gozdnega drevja v obdobju 1997-2018| Pests, diseases and harmful abiotic factors affecting forest tree seedlings in the period 1997-2018|Pests and diseases together with harmful abiotic factors present a serious problem for the production of healthy and vital forest tree seedlings. In order to examine the most important and most frequently occurring harmful abiotic and biotic factors, we analyzed the annual reports of health surveys from 18 forest nurseries in the period 1997-2018. The results revealed that the observed injuries were caused by pathogenic fungi in 68 % of cases, insects in 29 % of cases and abiotic factors in 1.1 % cases. Injuries occurred on 45 different tree and shrub genera, with Quercus sp. and Pinus sp. being the most frequently damaged (24.1 % and 17.5 %, respectively). Damage was frequently observed on leaves or needles (64.0 %). The most commonly reported diseases were powdery mildews (Erysiphe sp.). The greatest variability in the number of pests and diseases appeared on pines (Pinus sp.). Damage to planting stock usually occurred at low intensity (up to 10 %) but varied considerably during the period. The production of quality and healthy planting stock requires a holistic approach to seedling careŠkodljivi organizmi (ŠO) in abiotski škodljivi dejavniki (ŠD) na sadikah gozdnega drevja v gozdnih drevesnicah resno otežujejo vzgojo zdravih in kakovostnih sadik. Za preučitev pomembnejših in najpogosteje pojavljajočih se ŠO in ŠD smo analizirali letne zapisnike o zdravstvenih pregledih iz 18 gozdnih drevesnic v obdobju 1997-2018. Rezultati so pokazali, da so poškodbe v 68 % zabeleženih primerov posledica delovanja patogenih gliv, v 29 % primerih žuželk ter v 1,1 % abiotskih dejavnikov. Poškodbe so bile zabeležene na 45 različnih rodovih drevesnih in grmovnih vrst, in sicer največkrat na rodovih Quercus (24,1 %) in Pinus (17,5 %), najpogostejše poškodbe so bile na listih oziroma iglicah (64,0 %). Najpogosteje beležene bolezni so bile pepelovke (Erysiphe sp.), največ različnih ŠO in ŠD pa se je pojavljalo na borih (Pinus sp.). Poškodovanost sadik je bila običajno nizka (do 10 %), vendar je močno variirala med leti. Za pridelovanje kakovostnih in zdravih sadik je ključen celosten pristop pri varstvu in vzgoji sadikTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaGozdarski inštitut Slovenije